Invoke the module with the given URI and return the resulting ResultSequence as a single String concatenation of all the values.
[Visual Basic] Overridable Public Function InvokeToSingleString( _    ByVal moduleUri As String, _    ByVal separator As String _ ) As String
[C#] public virtual string InvokeToSingleString(    string moduleUri,    string separator );
Parameters
moduleUri
A URI that specifies a module to invoke on the server.
separator
A String value to insert between the String representation of each item in the result sequence.